Systems and methods for estimation of building wall area

ABSTRACT

A wall area estimation system generates an estimated wall area measurement of a building based on the received roof measurements (e.g., those generated by, received from or found in a three dimensional model of the roof) and a reference distance. The reference distance is a measurement indicative of a distance between a reference point on the roof and a ground surface. This reference distance may be used to determine how for down to extend the walls of the building (e.g., to a ground level) when building a three dimensional digital model of the building to aid in generating wall area measurements. The resulting wall measurements, roof measurements, measurements of areas missing from the wall used to generate a wall estimate report, or a combined roof and wall estimate report including various different identifiers indicating the different features and measurements based on the three dimensional model.

BACKGROUND

1. Technical Field

This invention is in the field of building size estimation, and in particular, building wall area estimation.

2. Description of the Related Art

The square footage measurements of a building walls are used as a main factor in quickly estimating costs of materials and labor to repair or replace walls (or wall coverings, such as siding, paint, and various facade materials) of the building and make other improvements or modifications to the entire building (e.g., to estimate the cost of siding materials to re-side a house). Thus, accurate wall area measurements are instrumental in these calculations. Current methods of measuring wall area often involve a person having to visit the building and manually measure particular dimensions of the building, or by referring to original plans or blueprints of the building. Manually measuring the dimensions for calculation of building wall area is costly and original plans for the building may be unavailable or out of date. Therefore, accurate methods for estimating and verifying wall area that avoid these drawbacks are desirable.

SUMMARY OF THE INVENTION

In one embodiment, a wall area estimation system generates an estimated wall area measurement of a building based on the received roof measurements (e.g., those generated by or found in a three dimensional model of the roof) and a reference distance. This reference distance is a measurement indicative of a distance between a reference point on the roof and the ground surface. This reference distance may be used to determine how for down to extend the walls of the building (e.g., to a ground level) when building a digital three dimensional model of the building to aid in generating wall area measurements.

The wall area measurement estimation system may be a system integrated with a roof estimation system or other system that provides roof measurements. In other embodiments, the roof area measurements may be provided by an external source, system or entity, or may be input manually by an operator of the wall area measurement estimation system.

The resulting wall measurements, roof measurements, measurements of areas missing from the wall, etc., generated by the wall estimation system may be used to generate a wall estimate report, or a combined roof and wall estimate report. The estimate report may include various different identifiers indicating different features and measurements displayed on images and/or line drawings of the building and/or in different areas of the report based on the generated three dimensional model of the building.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1A is a flow diagram showing an example method of generating an estimated wall area measurement, according to one non-limiting illustrated embodiment.

FIG. 1B is a flow diagram showing an example method that may be included as part of the generating the three dimensional model of the building step of the method shown in FIG. 1A, according to one non-limiting illustrated embodiment.

FIG. 1C is a flow diagram showing an example method of generating an estimated wall area measurement using a first a second aerial image of the building, according to one non-limiting illustrated embodiment.

FIG. 2A is an example screenshot of a user interface of a system for generating wall area measurements showing a three dimensional model of the roof, according to one non-limiting illustrated embodiment.

FIG. 2B is an example screenshot of the user interface of the system of FIG. 2A for generating wall area measurements showing a planar surface of the ground under the roof, according to one non-limiting illustrated embodiment.

FIG. 2C is an example screenshot of the user interface of the system of FIG. 2A for generating wall area measurements showing a three dimensional model of the building generated using the three dimensional model of the roof and the planar surface of the ground under the roof shown in FIG. 2B, according to one non-limiting illustrated embodiment.

FIG. 3 is an example screenshot of the user interface of the system of FIG. 2A for generating wall area measurements showing a north side perspective view of the three dimensional model of the building of FIG. 2C, according to one non-limiting illustrated embodiment.

FIG. 4 is an example screenshot of the user interface of the system of FIG. 2A for generating wall area measurements showing an east side elevation view of the three dimensional model of the building of FIG. 2C, according to one non-limiting illustrated embodiment.

FIG. 5 is an example screenshot of the user interface of the system of FIG. 2A for generating wall area measurements showing a west side elevation view of the three dimensional model of the building of FIG. 2C, according to one non-limiting illustrated embodiment.

FIG. 6 is an example screenshot of the user interface of the system of FIG. 2A for generating wall area measurements showing a top plan view of the three dimensional model of the building of FIG. 2C, according to one non-limiting illustrated embodiment.

FIG. 7 is an example screenshot of the user interface of the system of FIG. 2A for generating wall area measurements showing selection of a building wall of the three dimensional model of the building of FIG. 2C, according to one non-limiting illustrated embodiment.

FIG. 8 is an example screenshot of the user interface of the system of FIG. 2A for generating wall area measurements showing removal of the selected building wall of the three dimensional model of the building of FIG. 7, according to one non-limiting illustrated embodiment.

FIG. 9 is a schematic diagram of a computing environment in which systems and methods for estimation of building wall area may be implemented or of which they may be a part.

DETAILED DESCRIPTION

FIG. 1A is a flow diagram showing an example method 100 of generating an estimated wall area measurement, according to one non-limiting illustrated embodiment.

While each of the steps shown in FIG. 1A contributes to the overall solution, each can be used independently or in various combinations to yield improvements in estimating wall area measurements as discussed below. Below is an overview of each step in the process, which will be followed by a more detailed discussion of each step.

At 102, the process receives roof measurements of a building having a roof. These measurements may be estimated or actual dimensional and/or area measurements of the roof such as one or more of: roof edge lengths, ridge lengths, gable lengths, hip lengths, valley lengths, roof section pitch, roof area measurements, planar roof section area measurements, planar roof section dimension measurements, etc. These roof measurements may be generated internally by a component of a system that estimates wall area measurements (i.e., a wall area measurement estimation system) and received from such an internal component, or may be generated and received from an external component or entity separate from the wall area measurement estimation system. In some embodiments, the external component is located remotely from the wall area measurement estimation system.

For example, in some embodiments, the wall area measurement estimation system may be a system integrated with a roof estimation system or other system that provides roof measurements. In other embodiments, the roof area measurements may be provided by an external source, system or entity, or may be input manually by an operator of the wall area measurement estimation system.

At 104, the process receives a reference distance. This reference distance is a measurement indicative of a distance between a reference point on the roof and a ground surface. This reference distance may be used to determine how for down to extend the walls of the building (e.g., to a ground level) when building a three dimensional model of the building to aid in generating wall area measurements.

In particular, at 106 the process generates an estimated wall area measurement of the building based on the received roof measurements and the reference distance. The roof measurements may be generated by the roof estimation system described in one or more of U.S. patent application Ser. No. 12/148,439 filed on Apr. 17, 2008 and entitled AERIAL ROOF ESTIMATION SYSTEM AND METHOD, U.S. Pat. No. 8,078,436 issued Dec. 13, 2011, and entitled AERIAL ROOF ESTIMATION SYSTEMS AND METHODS, U.S. patent application Ser. No. 12/467,244 filed May 15, 2009 and entitled PITCH DETERMINATION SYSTEMS AND METHODS FOR AERIAL ROOF ESTIMATION, U.S. patent application Ser. No. 12/467,250 filed May 15, 2009 and entitled CONCURRENT DISPLAY SYSTEMS AND METHODS FOR AERIAL ROOF ESTIMATION, U.S. patent application Ser. No. 13/019,228 filed Feb. 1, 2011 and entitled GEOMETRIC CORRECTION OF ROUGH WIREFRAME MODELS DERIVED FROM PHOTOGRAPHS and U.S. Provisional Patent Application Ser. No. ______ (Attorney Docket No. 290115.409P1), which are each incorporated herein by reference in their entireties. The roof estimation system may be integrated with the wall area measurement estimation system, or with various components of the wall area measurement estimation system described herein.

In many such embodiments, one or more of the roof measurements are based on aerial photographs of the building via manual or automated analysis of roof features, such as by using the roof estimation system or modules described in one or more of U.S. patent application Ser. No. 12/148,439 filed on Apr. 17, 2008 and entitled AERIAL ROOF ESTIMATION SYSTEM AND METHOD, U.S. Pat. No. 8,078,436 issued Dec. 13, 2011, and entitled AERIAL ROOF ESTIMATION SYSTEMS AND METHODS, U.S. patent application Ser. No. 12/467,244 filed May 15, 2009 and entitled PITCH DETERMINATION SYSTEMS AND METHODS FOR AERIAL ROOF ESTIMATION, U.S. patent application Ser. No. 12/467,250 filed May 15, 2009 and entitled CONCURRENT DISPLAY SYSTEMS AND METHODS FOR AERIAL ROOF ESTIMATION, U.S. patent application Ser. No. 13/019,228 filed Feb. 1, 2011 and entitled GEOMETRIC CORRECTION OF ROUGH WIREFRAME MODELS DERIVED FROM PHOTOGRAPHS, and U.S. Provisional Patent Application Ser. No. ______ (Attorney Docket No. 290115.409P1). Thus, utilizing some embodiments described herein, one may estimate wall area measurements of a building merely using one or more aerial photographs of the building, with little or no additional information initially needed.

FIG. 1B is a flow diagram showing an example method 110 that may be included as part of the generating the three dimensional model of the building step of the method shown in FIG. 1A, according to one non-limiting illustrated embodiment.

While each of the steps shown in FIG. 1B contributes to the overall solution, each can be used independently or in various combinations to yield improvements in estimating wall area measurements as discussed below.

At 112, the process initially includes the three dimensional model of the roof described above as part of the three dimensional model of the building.

At 114, the process generates a wall in the three dimensional model of the building by extending the wall from along an edge of the roof toward the ground surface. As explained in more detail below, in many embodiments, in the three dimensional model the wall is dropped from some distance (see building three dimensional model 224 in FIGS. 2 c through FIG. 7) and set back from the edge of the roof to account for eave overhangs. In particular, the wall area estimation system extends the wall a distance until either intersecting a level of the ground surface, according to the received measurement indicative of the distance between the reference point on the roof and the ground surface, or intersecting another surface of the roof, according to the three dimensional model of the roof. In this manner, both the dimensions and shape of the wall may be built within the three dimensional model of the building. For example, this may include a triangular shape of the wall underneath a roof gable, a section of the wall between two levels of the roof, etc. This process may be repeated for each exterior wall of the building to build a three dimensional model of the building including, for example, models of the roof and exterior walls.

At 116, the process uses dimensions of the wall generated in the three dimensional model of the building to determine an area of the wall. This also may be repeated for each wall such that a total wall area for the entire building may be generated.

This three dimensional model of the building may be rendered within a graphical user interface of the wall estimation system. The graphical user interface provides selectable user interface elements within the graphical user interface configured to be placed by a user on areas of walls of the building within the three dimensional model. These graphical user interface elements represent areas missing from the wall such as doors or windows which are not to be included in the total wall area measurement. These graphical user interface elements may have dimensions corresponding to these areas missing from the wall and may also be adjustable by the user. The graphical user interface elements may also have initial dimensions corresponding to those of a predefined window size or a predefined door size (e.g., standard or typical window or door sizes). Once placed on the rendered three dimensional model, the wall area measurements will be automatically adjusted accordingly, corresponding to the area associated with each respective element placed on three dimensional model. The wall estimation system may perform this action in a variety of manners. Three different example processes to perform this automatic adjustment of the wall area measurements include, but are not limited to: (a) create a ‘cut out’ holes wall polygon to yield one or more new polygons that combine to form a wall with holes. Calculating the area of the new polygon(s) naturally yields a sum that is less the holes or (b) overlay objects that represent the size/position of ‘holes’ without making cuts into the polygon and calculate the combined area by subtracting the area of the solid wall from the area of the representative ‘holes’. (c) Combination of (a) and (b)—cut the holes from the wall polygon, but then fill them in with objects representing those voids. The wall area is thus already adjusted by the cut outs without having to subtract out the areas of the objects standing in their place.

FIG. 1C is a flow diagram showing an example method 120 of generating an estimated wall area measurement using a first a second aerial image of the building, according to one non-limiting illustrated embodiment.

At 122, the process correlates the first aerial image with the second aerial image. This correlation process is described in one or more of U.S. patent application Ser. No. 12/148,439 filed on Apr. 17, 2008 and entitled AERIAL ROOF ESTIMATION SYSTEM AND METHOD, U.S. Pat. No. 8,078,436 issued Dec. 13, 2011, and entitled AERIAL ROOF ESTIMATION SYSTEMS AND METHODS, U.S. patent application Ser. No. 12/467,244 filed May 15, 2009 and entitled PITCH DETERMINATION SYSTEMS AND METHODS FOR AERIAL ROOF ESTIMATION, U.S. patent application Ser. No. 12/467,250 filed May 15, 2009 and entitled CONCURRENT DISPLAY SYSTEMS AND METHODS FOR AERIAL ROOF ESTIMATION, U.S. patent application Ser. No. 13/019,228 filed Feb. 1, 2011 and entitled GEOMETRIC CORRECTION OF ROUGH WIREFRAME MODELS DERIVED FROM PHOTOGRAPHS

At 124 the process generates a three-dimensional model of the roof that includes a plurality of planar roof sections that each have a corresponding slope, area, and edges. This three-dimensional model of the roof is generated based at least in part on the correlation between the first and second aerial images, which is also described in one or more of U.S. patent application Ser. No. 12/148,439 filed on Apr. 17, 2008 and entitled AERIAL ROOF ESTIMATION SYSTEM AND METHOD, U.S. Pat. No. 8,078,436 issued Dec. 13, 2011, and entitled AERIAL ROOF ESTIMATION SYSTEMS AND METHODS, U.S. patent application Ser. No. 12/467,244 filed May 15, 2009 and entitled PITCH DETERMINATION SYSTEMS AND METHODS FOR AERIAL ROOF ESTIMATION, U.S. patent application Ser. No. 12/467,250 filed May 15, 2009 and entitled CONCURRENT DISPLAY SYSTEMS AND METHODS FOR AERIAL ROOF ESTIMATION, U.S. patent application Ser. No. 13/019,228 filed Feb. 1, 2011 and entitled GEOMETRIC CORRECTION OF ROUGH WIREFRAME MODELS DERIVED FROM PHOTOGRAPHS.

At 126 the process generates an estimated wall area measurement of the building. This estimated wall area measurement is generated based at least in part on the three-dimensional model of the roof and a measurement indicative of the distance between a reference point on the roof and the ground surface. For example, this reference distance may be used by the wall area estimation system to determine how for down to extend the walls of the building (e.g., to a ground level) when building a three dimensional model of the building

In some embodiments, the entire process, or nearly the entire process, of generating estimated wall areas is automated by the system automatically recognizing these particular building features and ground features in one or more images of the building through image analysis that utilizes typical characteristics of such features as viewed from the various angles of those in the one or more images.

FIGS. 2A through 8 show example screen shots of a graphical user interface of the system for generating wall area measurements at various points in the process of building the three dimensional model of the building and generating the wall measurements (e.g., as described above with reference to FIGS. 1A-1C).

FIG. 2A is an example screenshot 200 of a user interface of a system for generating wall area measurements showing a three dimensional model of the roof 210, according to one non-limiting illustrated embodiment.

Shown is a graphical user interface including two panels. The right panel 204 is displaying an aerial image of a building showing a top oblique view 206 of the building and the left panel 202 is displaying an interactive three dimensional model of the roof 210 of the building. Also note that the three dimensional model of the roof 210 is overlaid on the roof of the building shown in the aerial image on the right panel 204 in accordance with the particular angle of the top oblique view 206 of the building. In one embodiment, the interactive three dimensional model of the roof 210 is rendered in response to a user selecting the “create upper” button 214 shown in the screenshot 200.

For example, the screenshot 200 may be displayed as part of the process 110 shown in FIG. 2B in which the process initially includes the three dimensional model of the roof 210 described above as part of building the three dimensional model of the building.

FIG. 2B is an example screenshot 220 of the user interface of the system of FIG. 2A for generating wall area measurements showing a planar surface of the ground 216 under the roof 210, according to one non-limiting illustrated embodiment.

For example, the screenshot 200 may be displayed as part of the process 110 shown in FIG. 2B in which the process receives a measurement indicative of a distance between a reference point on the roof 210 and a ground surface 216. In some embodiments, a user may indicate one or more reference point(s) on the ground in the image shown in the right panel 204 (e.g., by a mouse click or other selection) to provide this measurement. In response to the user selecting the “create lower” button 222 shown on screenshot 220, the wall area estimation system will render the planar surface of the ground 216 in the corresponding area underneath the three dimensional model of the roof 210 according to the reference point selected by the user. Also, the planar surface of the ground 216 is an adjustable user interface control such that the user may change the location (or change height of sections of the perimeter, e.g. the ground surface need not be planar) of the planar surface of the ground 216 relative to the three dimensional model of the roof 210 and also change the size and orientation of the planar surface of the ground 216.

FIG. 2C is an example screenshot 230 of the user interface of the system of FIG. 2A for generating wall area measurements showing a three dimensional model of the building 224 generated using the three dimensional model of the roof 210 and the planar surface of the ground 216 under the roof shown in FIG. 2B, according to one non-limiting illustrated embodiment.

For example, the screenshot 200 may be displayed as part of the process 110 shown in FIG. 2B in which the process generates a wall 226 in the three dimensional model of the building 224 by extending the wall from along a corresponding edge of the roof 210 toward the planar surface of the ground 216.

In one embodiment, in response to a user selecting the “create walls” button 228, the wall area estimation system extends the wall 226 a distance until either intersecting planar surface of the ground 216 or intersecting another surface of the roof, according to the three dimensional model of the roof 210. In this manner, both the dimensions and shape of the wall may be built within the three dimensional model of the building 224. These may include, for example, a triangular shape of the wall 226 underneath a roof gable as shown in the three dimensional model of the roof 210. This process may be repeated for each exterior wall of the building to generate the three dimensional model of the building 224.

Once the three dimensional model of the building 224 is generated, wall area calculations are performed by the system based on the size and shape of the walls of the building in the model 224. These wall area measurements may be displayed on the graphical user interface, such as on corresponding areas of the walls in three dimensional model of the building 224, or anywhere else within the user interface. Also, the three dimensional model of the building 224 may be rotated and viewed from any angle. For example, this angle may correspond to the angle of view in the aerial image displayed on the right panel of the graphical user interface, such as shown in FIG. 3.

FIG. 3 is an example screenshot 300 of the user interface of the system of FIG. 2A for generating wall area measurements showing a north side perspective view of the three dimensional model of the building 224, according to one non-limiting illustrated embodiment. Various other views from different angles and sides (e.g., south, east and west views; plan, elevation and side views, etc.) may also be rendered and displayed in the left panel 202 and the corresponding right panel 204 that includes the image of the building. For example, FIG. 4 is an example screenshot 400 of the user interface of the system of FIG. 2A showing an east side elevation view of the three dimensional model of the building 224; FIG. 5 is an example screenshot 500 of the user interface of the system of FIG. 2A showing a west side elevation view of the three dimensional model of the building 224; and FIG. 6 is an example screenshot 600 of the user interface of the system of FIG. 2A showing a top plan view of the three dimensional model of the building 224.

The three dimensional model of the building 224 can be manipulated by the user in various manners to effect changes to the model, which result in automatic corresponding changes to the wall area measurements based on the walls of the generated building model 224.

For example, FIG. 7 is a screenshot 700 of the user interface of the system of FIG. 2A for generating wall area measurements showing selection of a building wall 226 of the three dimensional model of the building 224, according to one non-limiting illustrated embodiment. As shown in FIG. 7, the user has moved the cross hair cursor 202 to select the wall 226 of the three dimensional model of the building 224. Note the selected wall is highlighted in panel 202

FIG. 8 is an example screenshot 800 of the user interface of the system of FIG. 2A for generating wall area measurements showing removal of the selected building wall 226 of the three dimensional model of the building 224 of FIG. 7, according to one non-limiting illustrated embodiment. Once the wall is removed, it is also removed from the three dimensional model of the building 224 overlaid on the image of the building in the right panel 204, causing the tree 802 previously blocked by the wall 226 to be revealed in the image. As a result, the total area of all the walls of the house may be reduced by the area of the wall 226 that was removed from the building model 224.

In some embodiments, multiple panels of the user interface may each show a different view of the three dimensional model of the building 224. When the user changes the model using the graphical user interface in any one panel, the corresponding change will appear in the other panels showing the change as seen from the different corresponding view of each respective panel. For example, if the user places a graphical user interface element representing a window on one of the walls of the three dimensional model of the building 224, then that window will be visible from the different corresponding view of each respective panel. In this manner, the correct placement of the object or change to the three dimensional model of the building 224 may be visually verified with the image of the building according to the angle of the building in the image.

The resulting wall measurements, roof measurements, measurements of areas missing from the wall, etc., generated by the wall estimation system may be used to generate a wall estimate report, or a combined roof and wall estimate report. The estimate report may include various different identifiers indicating different features and measurements displayed on images and/or line drawings of the building and/or in different areas of the report based on the generated three dimensional model of the building. A non-limiting example of such a report is provided in Appendix A attached hereto. In some embodiments, the three dimensional model of the building 224 described herein, or some version thereof, may also be provided in the report. For example, the three dimensional model of the building 224 may be overlaid on an image of the building in the report. The report may be communicated or provided electronically by the wall estimation system or other 3^(rd) party system in various configurations and formats required by the insurance, real estate and construction industries, and/or printed and mailed. This report may also be represented and communicated in different data formats, such as Extensible Markup Language (XML) files or standard three dimensional (3D) model and/or computer-aided design (CAD) exchange formats such as Virtual Reality Modeling Language (VRML), Drawing Interchange Format, or Drawing Exchange Format (DXF) and the like.

In some embodiments, the wall area estimation system may also generate associations between one or more areas of a wall with one or more wall characteristics. These associations may be included in the report as indications (markings, designations, numbers, markings overlaid on line drawings or images of the wall, etc.) of the associations between these areas of the wall and the particular wall characteristics. The wall characteristics may include characteristics regarding, but not limited to, one or more of: wall material type, wall construction type, wall color, wall covering type, wall paint type, wall siding type, wall façade type, wall damage, wall damage type, and extent of wall damage, etc. For example, the report or user interface system may include indications of portions or areas of the wall that are made of a particular material such as brick or stucco and/or that appear damaged vs. not damaged, or walls that are painted green vs. blue, etc. The wall area estimation system may also generate an estimated area of each of the one or more areas of the wall associated with particular wall characteristics and include these area measurements as indications on the graphical user interface of the wall estimation system and/or in the report.

FIG. 9 is a schematic diagram of a computing environment in which systems and methods for estimation of building wall area may be implemented or of which they may be a part. For example, processes 100, 110 and 120 described above in conjunction with FIGS. 1A-1C may be performed or implemented by, for example, one or more software modules or components or any combination of suitable hardware, firmware or software components or devices including those that are a part of, stored in, or configure the computing environment of FIG. 9. Also, the graphical user interface functions and features of the wall area estimation system may be performed or implemented by, for example, one or more software modules or components or any combination of suitable hardware, firmware or software components or devices including those that are a part of, stored in, or configure the computing environment of FIG. 9.

The computing environment 900 will at times be referred to in the singular herein, but this is not intended to limit the embodiments to a single device since in typical embodiments there may be more than one computer system or device involved. Unless described otherwise, the construction and operation of the various blocks shown in FIG. 9 are of conventional design. As a result, such blocks need not be described in further detail herein, as they will be understood by those skilled in the relevant art.

The computing environment 900 may include one or more processing units 912 a, 912 b (collectively 912), a system memory 914 and a system bus 916 that couples various system components including the system memory 914 to the processing units 912. The processing units 912 may be any logic processing unit, such as one or more central processing units (CPUs) 912 a, digital signal processors (DSPs) 912 b, digital video or audio processing units such as coder-decoders (codecs) or compression-decompression units, application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), etc. The system bus 916 can employ any known bus structures or architectures, including a memory bus with memory controller, a peripheral bus, and a local bus. The system memory 914 includes read-only memory (“ROM”) 918 and random access memory (“RAM”) 920. A basic input/output system (“BIOS”) 922, which can form part of the ROM 918, contains basic routines that help transfer information between elements within the computing environment 900, such as during start-up.

The computing environment 900 may include a hard disk drive 924 for reading from and writing to a hard disk 926 (including a solid state memory device), an optical disk drive 928 for reading from and writing to removable optical disks 932, and/or a magnetic disk drive 930 for reading from and writing to magnetic disks 934. The optical disk 932 can be a CD-ROM, while the magnetic disk 934 can be a magnetic floppy disk or diskette. The hard disk drive 924, optical disk drive 928 and magnetic disk drive 930 may communicate with the processing unit 912 via the system bus 916. The hard disk drive 924, optical disk drive 928 and magnetic disk drive 930 may include interfaces or controllers (not shown) coupled between such drives and the system bus 916, as is known by those skilled in the relevant art. The drives 924, 928 and 930, and their associated computer-readable storage media 926, 932, 934, may provide nonvolatile and non-transitory storage of computer readable instructions, data structures, program modules and other data for the computing environment 900. Although the depicted computing environment 900 is illustrated employing a hard disk 924, optical disk 928 and magnetic disk 930, those skilled in the relevant art will appreciate that other types of computer-readable storage media that can store data accessible by a computer may be employed, such as magnetic cassettes, flash memory, solid state drives, digital video disks (“DVD”), Bernoulli cartridges, RAMs, ROMs, smart cards, etc. For example, computer-readable storage media may include, but is not limited to, random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory, compact disc ROM (CD-ROM), digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, solid state memory or any other medium which can be used to store the desired information and which may be accessed by processing unit 912 a.

Program modules can be stored in the system memory 914, such as an operating system 936, one or more application programs 938, other programs or modules 940 and program data 942. Application programs 938 may include instructions that cause the processor(s) 912 to perform generating digital roof models, generating roof and wall area measurements, and store and display input images or images generated by creating digital roof models and generating roof and wall area measurements, including the processes described herein. Other program modules 940 may include instructions for handling security such as password or other access protection and communications encryption. The system memory 914 may also include communications programs, for example, a Web client or browser 944 for permitting the computing environment 900 to access and exchange data including digital images, roof measurements and other building data with sources such as Web sites of the Internet, corporate intranets, extranets, or other networks and devices, as well as other server applications on server computing systems. The browser 944 in the depicted embodiment is markup language based, such as Hypertext Markup Language (HTML), Extensible Markup Language (XML) or Wireless Markup Language (WML), and operates with markup languages that use syntactically delimited characters added to the data of a document to represent the structure of the document. A number of Web clients or browsers are commercially available such as those from Mozilla, Google, and Microsoft of Redmond, Wash.

While shown in FIG. 9 as being stored in the system memory 914, the operating system 936, application programs 938, other programs/modules 940, program data 942 and browser 944 can be stored on the hard disk 926 of the hard disk drive 924, the optical disk 932 of the optical disk drive 928 and/or the magnetic disk 934 of the magnetic disk drive 930.

An operator can enter commands and information into the computing environment 900 through input devices such as a touch screen or keyboard 946 and/or a pointing device such as a mouse 948, and/or via a graphical user interface in order to receive, process, store and send data on which wall area measurement estimation has been or will be performed as described herein. Other input devices can include a microphone, joystick, game pad, tablet, scanner, etc. These and other input devices are connected to one or more of the processing units 912 through an interface 950 such as a serial port interface that couples to the system bus 916, although other interfaces such as a parallel port, a game port or a wireless interface or a universal serial bus (“USB”) can be used. A monitor 952 or other display device is coupled to the system bus 916 via a video interface 954, such as a video adapter which may be configured to display images used by or generated by wall area measurement estimation as described herein. The computing environment 900 can include other output devices, such as speakers, printers, etc.

The computing environment 900 can operate in a networked environment using logical connections to one or more remote computers and/or devices. For example, the computing environment 900 can operate in a networked environment using logical connections to one or more other computing systems, mobile devices and other service providers or information servers that provide the digital images in various format or by other electronic delivery methods. Communications may be via a wired and/or wireless network architecture, for instance wired and wireless enterprise-wide computer networks, intranets, extranets, telecommunications networks, cellular networks, paging networks, and other mobile networks.

The various embodiments described above can be combined to provide further embodiments. All of the U.S. patents, U.S. patent application publications, U.S. patent applications, foreign patents, foreign patent applications and non-patent publications referred to in this specification and/or listed in the Application Data Sheet are incorporated herein by reference, in their entirety. Aspects of the embodiments can be modified, if necessary to employ concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled. Accordingly, the claims are not limited by the disclosure. 

1. A computing system for generating estimated wall area measurements, the computing system comprising: a memory; a wall area measurement estimation module that is stored on the memory and that is configured, when executed, to: receive roof measurements of a building having a roof; receive one or more measurements indicative of one or more distances between one or more reference points on the roof and a ground surface on which the building rests; and generate, based at least in part on the received roof measurements and the received one or more measurements indicative of the one or more distances between the one or more reference points on the roof and the ground surface, an estimated wall area measurement of the building.
 2. The computing system of claim 1 further comprising generating the roof measurements from a digital three dimensional model of the roof.
 3. The computing system of claim 2 wherein the generating the estimated wall area measurement of the building includes: generating a digital three dimensional model of the building by: including the three dimensional model of the roof as part of the three dimensional model of the building; and generating a wall within the three dimensional model of the building by extending the wall from along an edge of a model roof represented by the three dimensional model of the roof toward a model ground surface, the wall extending a distance until either intersecting a level of the model ground surface, according to the received one or more measurements indicative of the one or more distances between the one or more reference points on the roof and the ground surface, or intersecting another surface of the model roof, according to the three dimensional model of the roof; and using dimensions of the wall generated in the three dimensional model of the building to determine an area of the wall.
 4. The computing system of claim 3 wherein the wall area measurement estimation module is further configured, when executed, to: render the three dimensional model of the building within a graphical user interface; and provide selectable user interface elements within the graphical user interface configured to be overlaid on areas on the wall, the user interface elements having dimensions corresponding to areas missing from the wall; receive indications regarding locations on the wall on which one or more of the selectable user interface elements have been overlaid; and subtract an amount from the estimated wall area measurement of the building corresponding based on the received indications regarding locations on the wall on which one or more of the selectable user interface elements have been overlaid.
 5. The computing system of claim 3 wherein the using the dimensions of the wall generated in the three dimensional model of the building to determine an area of the wall includes: rendering the three dimensional model of the building within a graphical user interface; providing selectable user interface elements within the graphical user interface configured to be utilized by a user to cut out one or more portions of the wall; receiving indications regarding locations on the wall on which one or more of the selectable user interface elements have been utilized to cut out one or more portions of the wall; and determining the area of the wall by calculating an area of a shape of the wall formed based on the received indications regarding locations on the wall on which the one or more of the selectable user interface elements have been utilized to cut out the one or more portions of the wall.
 6. The computing system of claim 5 wherein the graphical user interface includes windows each displaying different views of the three dimensional model of the building that are configured to concurrently show modifications being made by a user to walls of the three dimensional model of the building from a corresponding perspective of each of the different views.
 7. The computing system of claim 5 wherein the dimensions corresponding to areas missing from the wall are those of a predefined window size or a predefined door size.
 8. The computing system of claim 1 wherein the wall area measurement estimation module is further configured, when executed, to repeat the generating the estimated wall area measurement of the building for each exterior wall of the building.
 9. The computing system of claim 1 wherein the wall area measurement estimation module is further configured, when executed, to: subtract an amount from the estimated wall area measurement of the building corresponding to an area on a wall of the building indicated as an area missing from the wall.
 10. The computing system of claim 9 wherein the area on the wall of the building indicated as an area missing from the wall is an area corresponding to a window or a door of the building.
 11. The computing system of claim 1 wherein the wall area measurement estimation module is further configured, when executed, to: receive an indication that a wall of the building for which the estimated wall area measurement is generated is at least partially obstructed by an object in an image of the wall used to generate the three dimensional model of the roof; (may want to not tie together the concept of ‘marking obstructed areas’ and ‘accounting for assumed % of non-wall area’) and subtract a predefined percentage from the estimated wall area measurement of the building corresponding to a size of the partial obstruction to account for possible areas missing from the wall which may be obstructed in the image by the object in the image.
 12. The computing system of claim 1 wherein the three dimensional model of the roof is based on a correlation between two aerial images of the roof.
 13. The computing system of claim 1, wherein the wall area measurement estimation module is further configured, when executed, to generate and deliver a wall area measurement estimate report that includes multiple line drawings of the building, each from a different perspective annotated with numerical values that indicate corresponding estimated wall area measurements for walls visible in the respective perspective.
 14. The computing system of claim 13 wherein the wall area measurement estimation module is further configured, when executed, to generate and deliver a wall area measurement estimate report that includes roof measurements including pitch annotated on corresponding roof sections.
 15. A computer-implemented method for generating estimated wall area measurements, the method comprising: including a three dimensional model of a roof of a building as part of a three dimensional model of the building; and generating a wall within the three dimensional model of the building by extending the wall in the three dimensional model from along or near an edge of a model roof represented by three dimensional model of the roof toward a ground surface, the wall extending a distance until either intersecting a level of a model ground surface, according to one or more measurements indicative of one or more distances between one or more reference points on the roof and an actual ground surface, or intersecting another surface of the model roof, according to the three dimensional model of the roof; and using dimensions of the wall generated in the three dimensional model of the building to determine an area of the wall.
 16. The method of claim 15, further comprising: rendering the three dimensional model of the building within a graphical user interface; and providing selectable user interface elements within the graphical user interface configured to be placed on areas on the wall, the user interface elements having dimensions corresponding to areas missing from the wall.
 17. The method of claim 15, further comprising: generating windows within the graphical user interface, each generated window configured to display different views of the three dimensional model of the building and to concurrently show modifications being made by a user to walls of the three dimensional model of the building from a corresponding perspective of each of the different views.
 18. A non-transitory computer-readable medium whose contents enable a computing system to generate estimated wall area measurements, by performing a method comprising: receiving a first and a second aerial image of a building having a roof, each of the aerial images providing a different view of the roof of the building; correlating the first aerial image with the second aerial image; generating, based at least in part on the correlation between the first and second aerial images, a three-dimensional model of the roof that includes a plurality of planar roof sections that each have a corresponding slope, area, and edges; generating an estimated wall area measurement of the building based at least in part on the three-dimensional model of the roof and one or more measurements indicative of one or more distances between one or more reference points on the roof and a ground surface.
 19. The computer-readable medium of claim 18 wherein the contents further enable a computing system to subtract an amount from the estimated wall area measurement of the building corresponding to an area on a wall of the building indicated as an area missing from the wall.
 20. The computer-readable medium of claim 19 wherein the area on the wall of the building indicated as an area missing from the wall is an area corresponding to a window or a door of the building.
 21. The computer-readable medium of claim 18 wherein the contents further enable a computing system to: associating one or more areas of a wall for which the estimated wall area is generated with one or more wall characteristics; and generating an estimated area of each of the one or more areas of the wall associated with one or more wall characteristics.
 22. The computer-readable medium of claim 21 wherein the one or more wall characteristics include characteristics regarding one or more of: wall material type, wall color, wall covering type, wall paint type, wall siding type, wall façade type, wall damage, wall damage type, and extent of wall damage.
 23. A wall area measurement estimate report produced by a process comprising: receiving a first and a second aerial image of a building having a roof, each of the aerial images providing a different view of the roof of the building; correlating the first aerial image with the second aerial image; generating, based at least in part on the correlation between the first and second aerial images, a three-dimensional model of the roof that includes a plurality of planar roof sections that each have a corresponding slope, area, and edges; generating an estimated wall area measurement of the building based at least in part on the three-dimensional model of the roof and one or more measurements indicative of one or more distances between one or more reference points on the roof and a ground surface.
 24. The wall area report of claim 23 wherein the generating an estimated wall area measurement of the building includes generating a three dimensional model of the building by including the three dimensional model of the roof as part of the three dimensional model of the building and using the one or more measurements indicative of the one or more distances between the one or more reference points on the roof and the ground surface.
 25. The wall area report of claim 23 wherein the process further comprises: generating associations between one or more areas of a wall for which the estimated wall area is generated with one or more wall characteristics; and including in the report indications of the associations between the one or more areas of a wall for which the estimated wall area is generated with one or more wall characteristics.
 26. The wall area report of claim 25 wherein the one or more wall characteristics include characteristics regarding one or more of: wall material type, wall construction type, wall color, wall covering type, wall paint type, wall siding type, wall façade type, wall damage, wall damage type, and extent of wall damage.
 27. The wall area report of claim 23 wherein the process further comprises: generating an estimated area of each of the one or more areas of the wall associated with one or more wall characteristics; and including in the report the estimated area of each of the one or more areas of the wall associated with the one or more wall characteristics. 